γ-TiAl合金表面双层辉光等离子铬钨共渗层的高温氧化行为
High-Temperature Oxidation Behavior of Double Glow Plasma Cr-W Alloying Layer on γ-TiAl Alloy Surface
摘 要
采用双层辉光等离子表面技术在γ-TiAl合金表面制备铬钨共渗层, 用SEM、EDS和XRD分析等方法结合高温氧化试验, 研究了该共渗层在高温下的氧化(共100 h)行为。结果表明: γ-TiAl合金经双层辉光等离子铬钨共渗后, 共渗层表面形貌完好, 组织均匀, 与基体连接紧密, 结合处无孔洞及裂纹等缺陷存在; 铬钨共渗层在高温下可形成保护性氧化膜, 有效降低了氧化速率, 与γ-TiAl合金基体相比, 氧化增重降低, 抗氧化能力明显提高; 随氧化温度升高, 铬钨共渗层的氧化增重明显增大, 但氧化机制不变; 在氧化过程中, 除了铬、钨发生内扩散外, 基体中的钛、铝元素均发生了显著的外扩散。
双层辉光等离子表面技术
铬钨共渗层
高温氧化
γ-TiAl alloy
double glow plasma(DGP) surface alloying technology
Cr-W alloying layer
high temperature oxidation
Abstract
Cr-W alloying layer was prepared on TiAl alloy by using the double glow plasma surface alloying technology(DGP), and the high temperature oxidation behavior of the alloying layer was tested by SEM, EDX, XRD and high temperature oxidation experiment. The results show that the surface morphology of the Cr-W alloying layer is smooth and the microstructure is uniform. The alloying layer closely connects with the matrix, without holes, cracks and other defects on the joint. The Cr-W alloying layer at high temperature can form a protective film to reduce the rate of oxidation effectively. The anti-oxidantion capacity of the alloying layer is significantly improved, and the oxidation weight gain is lower than that of the matrix. With the increase of the oxidation temperature, the oxidation weight gain of the alloying layer increases significantly and the oxidation mechanism is unchanged. In the oxidation process, the internal diffusion of Cr and W is found, together with the external diffusion of Ti and Al.
中图分类号 TG174.445
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(飞机51175247); 南京航空航天大学创新创业训练计划资助项目(20120125074984)
收稿日期 2013/2/23
修改稿日期 2014/2/16
网络出版日期
作者单位点击查看
备注魏祥飞(1988-), 男, 黑龙江齐齐哈尔人, 博士研究生。
引用该论文: WEI Xiang-fei,ZHANG Ping-ze,WEI Dong-bo,SHA Li-li,ZHOU Peng,ZHANG Yang. High-Temperature Oxidation Behavior of Double Glow Plasma Cr-W Alloying Layer on γ-TiAl Alloy Surface[J]. Materials for mechancial engineering, 2014, 38(5): 12～16
魏祥飞,张平则,魏东博,沙李丽,周鹏,张扬. γ-TiAl合金表面双层辉光等离子铬钨共渗层的高温氧化行为[J]. 机械工程材料, 2014, 38(5): 12～16
被引情况:
【1】叶喜葱,吴彬彬,罗爱娇,赵光伟, "金属型底浇式真空吸铸钛铝基合金凝固的有限元模拟",机械工程材料 40, 49-53(2016)
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参考文献
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【2】黄劲松, 刘咏, 贺跃辉, 等.Ti-Al-Nb-W-B合金不同工艺处理状态的组织演变及钨的作用［J］.金属热处理,2006(7):13-17.
【3】郑婷,骆心怡,孙晓宾,等.钛合金表面抗氧化技术的研究进展［J］.机械工程材料,2010,34(4):11-13.
【4】ZHANG W J, FRANCESCONI L, EVANGELISTA E. A novel heat treatment to develop very fine lamellar structure in cast gamma-base TiAl alloys［J］.Materials Letters,1996,27(4/5):135-138.
【5】LI X Y, TANIGUCHI S. Oxidation behavior of a γ-TiAl-based alloy implanted by silicon and/or carbon［J］.Materials Science and Engineering:A,2005,398(1/2):268-274.
【6】MUKHERJEE S, MAITZ M F, PHAM M T, et al. Development and biocompatibility of hard Ti-based coatings using plasma immersion ion implantation-assisted deposition［J］.Surface and Coatings Technology, 2005, 196(1/3): 312-316.
【7】LI X Y, TANIGUCHI S, ZHU Y C, et al. Oxidation beha-vior of TiAl protected by Si+Nb combined ion implantation［J］.Intermetallics,2001,9(5):443-449.
【8】GRAY S, JACOBS M H, PONTON C B, et al. A method of heat-treatment of near γ-TiAl to enhance oxidation resistance by the formation of a Ti5Si3 layer［J］.Materials Science and Engineering: A,2004,384(1/2):77-82.
【9】周海,陈飞,姚斌,等.TiAl 合金表面等离子喷涂双层涂层组织与性能的研究［J］.机械工程材料,2004,28(7):37-39.
【10】王东生, 田宗军, 陈志勇, 等.TiAl合金表面抗高温氧化涂层研究［J］.中国腐蚀与防护学报,2009(1):1-8.
【11】王福会, 唐兆麟.TiAl金属间化合物的高温氧化与防护研究进展［J］.材料研究学报,1998(4):337-344.
【12】TEDMON JR C S. The high-temperature oxidation of ductile Cr Ru alloys［J］.Journal of the Less Common Metals,1966,10(5):301-311.
【13】GULBRANSEN E A. Infra-red heating source and associated apparatus for the study of contaminants in inert gases［J］.Thermochimica Acta,1979,29(2):295-299.
【14】高原, 徐晋勇, 高清, 等.双层辉光离子渗金属技术特点分析［J］.热加工工艺,2006(3):56-59.
【15】CASTALDI L, KURAPOV D, REITER A, et al. High temperature phase changes and oxidation behavior of Cr-Si-N coatings［J］.Surface and Coatings Technology,2007,202(4/7):781-785.
【16】WEI D B, ZHANG P Z, YAO Z J, et al. Oxidation of double-glow plasma chromising coating on TC4 titanium alloys［J］.Corrosion Science,2013,66:43-50.
【17】LEYENS C, VAN LIERE J W, PETERS M, et al. Magnetron-sputtered Ti-Cr-Al coatings for oxidation protection of titanium alloys［J］.Surface and Coatings Technology,1998,108/109:30-35.
【18】童长青, 成来飞, 张立同, 等.C/SiC-W复合材料的制备与表征［J］.航空材料学报,2006(3):152-156.
【19】彭其春, 李光强, 朱诚意.稀土元素对Fe-Cr-Al系合金抗氧化性的影响［J］.稀土,2003(5):13-17.
【20】魏东博, 张平则, 姚正军, 等. TC4合金双辉等离子渗Cr高温氧化行为［J］.材料热处理学报,2011(10):146-150.
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